The recent work done by the SINAP FEL team shows the first lasing of a free electron laser with the echo-enabled harmonic generation scheme, which is very promising for producing coherent laser at short wavelength down to the x-ray regime.

A research group at Zhejiang University headed by Prof. Huang Feihe recently developed a supramolecular gel with self-repair function, featuring large deformation and short recovery time. A relative paper was published in Angewandte Chemie International Edition.

Supramolecular gels are formed by colloidal particles tangling with non-covalent interactions. For the first time in the world, the research group headed by Prof. Huang developed two different kinds of supramolecular gels in simple process with excellent self-healing properties.

According to Dr. Zhang Mingming, the first author of the paper, the study used two different molecular cross-linking agents with pendent dibenzo[24]crown-8 units to develop two different kinds of supramolecular gels. Inside the gels there is a special axis-ring penetration structure which will be damaged with external stimulation. However, due to its stability, it will resume the penetration structure after a period of time. In experiments, these supramolecular gels will recover its elastic and viscous properties within one minute after being stretched to 100 times long. In 3 or 4 minutes, they will achieve complete self-repair.

https://www.hollandinnovation.cn/wp-content/uploads/2017/02/logo_holland_innovation_105.svg00hollandinnovationhttps://www.hollandinnovation.cn/wp-content/uploads/2017/02/logo_holland_innovation_105.svghollandinnovation2012-07-04 21:20:002012-07-04 21:20:00Self-Healing Supramolecular Gels Developed at Zhejiang University